Auxiliary reading structure for reading of oil level gauge

Abstract

The invention relates to the technical field of oil level gauges, and discloses an oil level gauge reading auxiliary reading structure which comprises a tubular oil level gauge, a semi-open fixed shell is fixedly installed on the outer wall of the tubular oil level gauge, and two protective shells which can be close to or away from each other are rotatably installed on the inner wall of the fixed shell. And two observation shells which can be close to or far away from each other are rotationally mounted on the outer wall of the tubular oil level gauge. By arranging the protective shell and the observation shell, when a worker needs to read and opens the protective shell, the observation shell is automatically closed through the driving assembly, then the reading is amplified through the auxiliary device installed on the observation shell, the operator is helped to assist in reading, and when the auxiliary device does not need to be used, the protective shell can be closed, so that the working efficiency is improved. Therefore, the driving assembly drives the observation shell to return to the closed cavity of the protection shell and the tubular oil level indicator, the auxiliary device and the transparent window are protected, the influence of external environment factors on the transparent window and the auxiliary device is prevented, and the tubular oil level indicator is suitable for various weather and operation environments.

Description

Technical Field

[0001] The present invention relates to the technical field of oil level gauges, and specifically to an auxiliary reading structure for the indication of an oil level gauge. Background Art

[0002] A transformer is an electrical device used to change the AC voltage. It transfers electrical energy from one circuit to another through the principle of electromagnetic induction. An oil level gauge is a device installed on a transformer to monitor the liquid level of the insulating oil inside the transformer to ensure sufficient oil volume and prevent the transformer from overheating and damage. By monitoring the oil level in real time, the oil level gauge helps maintain the normal operation of the transformer and extend the service life of the equipment.

[0003] As disclosed in Chinese Patent Publication No. CN216746351U, this application discloses an oil level gauge for a power transformer, belonging to the field of oil level gauges. It includes a housing. A connecting rod is fixedly connected to the bottom end of the housing, and a connecting head is fixedly connected to one side surface of the connecting rod. A cylindrical chamber is opened inside the housing, and a cleaning and stabilizing component is provided inside the cylindrical chamber. A notch is opened at the top end of the side surface of the housing, and a gas guiding component is movably connected inside the notch. An observation window mechanism is embedded on the outer side surface of the housing. The cleaning and stabilizing component specifically includes: a guide rod fixed at the middle position inside the cylindrical chamber. A float is provided on the outer side surface of the guide rod. A through hole for the guide rod to pass through is opened inside the float, and a plurality of evenly distributed movable balls are embedded on the inner wall of the through hole. The number of the balls is four, and the outer side surfaces of the four balls are in contact with the outer side surface of the guide rod. This application solves the technical problem that a lot of oil adheres to the inner wall of the tubular oil level gauge in the prior art, and achieves the technical effect of cleaning the adhered oil to improve the observation result.

[0004] This oil level gauge is provided with a cleaning and stabilizing component, which effectively solves the technical problem that oil adheres to the inner wall of the tubular oil level gauge in the prior art, and further achieves the technical effect of cleaning the adhered oil to improve the observation result. However, in actual situations, many oil level gauges are often exposed to the outdoor environment, so they will be worn under rainy, snowy and daily weather conditions. This long-term environmental impact will cause water droplets, frost or dust to adhere to the surface of the oil level gauge, thereby blurring the reading and affecting the accuracy of reading.

[0005] Therefore, it is necessary to design an auxiliary reading device to ensure that the reading of the oil level gauge is always clearly visible under various weather conditions, and improve the convenience and safety of operation. Summary of the Invention

[0006] The purpose of the present invention is to provide an auxiliary reading structure for the indication of an oil level gauge to solve at least one of the technical problems existing in the above prior art.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: an oil level gauge indication auxiliary reading structure, comprising a tubular oil level gauge, wherein a semi-open fixed shell is fixedly installed on the outer wall of the tubular oil level gauge, two protective shells that can move closer to or farther away from each other are rotatably installed on the inner wall of the fixed shell, and two observation shells that can move closer to or farther away from each other are rotatably installed on the outer wall of the tubular oil level gauge, and the observation shells are located inside the protective shell; When the two protection shells are in a closed state, the two observation shells are retracted into a closed space formed by the protection shells and the tubular oil level gauge; When the two observation shells are in a closed state, the two protection shells are retracted between the fixed shell and the tubular oil level gauge; It also includes an auxiliary component installed on the closed and connected side of the two observation shells, and when the two observation shells are closed, the auxiliary component can amplify the indication; Also included is a driving assembly, which can make the protection shell and the observation shell move in opposite directions.

[0008] Preferably, the auxiliary component includes an observation window vertically slidably mounted on the closed connecting side of one of the observation shells, and a magnifying glass vertically slidably mounted on the closed connecting side of the other observation shell. When the two observation shells are closed, the magnifying glass fits tightly against the observation window front and back.

[0009] Preferably, the driving assembly includes an annular groove opened at the bottom of the fixed shell, a rotating gear is rotatably installed in the annular groove, a first rack meshing with the rotating gear is fixedly installed inside the protective shell, and a second rack meshing with the rotating gear is fixedly installed on the outer wall of the observation shell.

[0010] Preferably, a piston body is fixedly mounted on the inner wall of the fixed shell, two piston plates are slidably mounted on the outer wall of the piston body, piston rods are fixedly connected to the outer walls of the two piston plates, the two piston rods penetrate the outer wall of the piston body and are fixedly connected to the outer wall of the corresponding protective shell, and an air inlet groove is provided on the top of the piston rod near the piston plate; The inner wall of the piston body is provided with an air inlet pipe communicating with the outside, and the inner wall of the piston body is also provided with an air outlet pipe communicating with the interior of the fixed shell. Both the air inlet pipe and the air outlet pipe are provided with a one-way valve.

[0011] Preferably, the top of the observation window and the magnifying glass are both fixedly mounted with a folding grid cloth, one side of which is fixedly connected to the corresponding observation shell, and the bottom of the observation window and the magnifying glass are also fixedly mounted with a folding grid cloth, one side of which is fixedly connected to the corresponding observation shell; The folded grid cloths of the observation window and the magnifying glass are in front-to-back contact and magnets are installed at the contacting positions.

[0012] Preferably, armrests are fixedly installed on the outer walls of both of the protective cases, and magnets are installed on the closing connection sides of the protective cases.

[0013] Preferably, the front and back fitting surfaces of the observation window and the magnifying glass are arc surfaces.

[0014] Preferably, a water-absorbing cotton is installed at the inner bottom of the fixed case.

[0015] Preferably, reflective layers are provided on the inner walls of the protective case and the fixed case.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing a protective case and an observation case, when the staff needs to take a reading, when the protective case is opened, the observation case is automatically closed by the driving component. Then, through the auxiliary device installed on the observation case, the reading is magnified to assist the operator in taking the reading. When the auxiliary device is not needed, the protective case can be closed, so that the driving component drives the observation case back into the closed cavity of the protective case and the tubular oil level gauge, thereby protecting the auxiliary device and the transparent window and preventing the influence of external environmental factors (such as dust, rain, etc.) on the transparent window and the auxiliary device, adapting to various weather and operating environments. In addition, the oil level gauge reading auxiliary structure of the present application also has multiple positive and beneficial technical effects, and the specific content will be described together with the specific implementation manners. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the present invention; Figure 2 is the three-dimensional view of the present invention; Figure 3 is the state schematic diagram when the protective case of the present invention is closed; Figure 4 is the schematic diagram of the lighting lamp and the connecting block of the present invention; Figure 5 is the first top cross-sectional view of the present invention; Figure 6 is the second top cross-sectional view of the present invention; Figure 7 is the schematic diagram of the piston and the installation case of the present invention; Figure 8 is the partial three-dimensional exploded view of the present invention; Figure 9 is the three-dimensional schematic diagram of the observation window and the magnifying glass of the present invention.

[0018] In the figure: 1. Tube-type oil level gauge; 2. Fixed shell; 3. Protection shell; 4. Observation shell; 5. Observation window; 6. Folding partition cloth; 7. Annular groove; 8. Rotating gear; 9. First rack; 10. Second rack; 11. Handrail; 12. Lighting lamp; 13. Connecting block; 14. Piston body; 15. Piston plate; 16. Piston rod; 17. Air inlet groove; 18. Installation shell; 19. Magnifying glass; 20. Contact port. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 9 , the present invention provides a technical solution: an auxiliary reading structure for the indication of an oil level gauge, including a tube-type oil level gauge 1, and a semi-open fixed shell 2 is fixedly installed on the outer wall of the tube-type oil level gauge 1. Among them, according to needs, the opening angle of the fixed shell 2 can be half, 90 degrees, or any other angle. Two protection shells 3 that can approach or move away from each other are rotatably installed on the inner wall of the fixed shell 2, and two observation shells 4 that can approach or move away from each other are rotatably installed on the outer wall of the tube-type oil level gauge 1, and the observation shell 4 is located inside the protection shell 3; When the two protection shells 3 are in a closed state, the two observation shells 4 retract into the closed space formed by the protection shell 3 and the tube-type oil level gauge 1; When the two observation shells 4 are in a closed state, the two protection shells 3 retract between the fixed shell 2 and the tube-type oil level gauge 1; It also includes an auxiliary component installed on the closing connection side of the two observation shells 4. When the two observation shells 4 are closed, the auxiliary component can clearly read the indication of the oil level gauge; It also includes a driving component, and the driving component can make the protection shell 3 and the observation shell 4 move in opposite directions.

[0021] Common oil level gauges are usually selected according to specific application scenarios and requirements, such as float-type oil level gauges, ultrasonic oil level gauges, and tube-type oil level gauges 1, etc. In this case, an auxiliary reading device is designed for the tube-type oil level gauge 1. Refer to Figure 8 , there is a glass tube connected to a transformer inside the tube-type oil level gauge 1, and the liquid level change is directly displayed through the glass tube. A metal shell is sleeved outside, and the shell has multiple transparent windows so that users can view the liquid level change at different angles. One of the transparent windows is specially designed for observing the reading to ensure that the liquid level data can be clearly read in various environments. In this case, the window for observing the reading is mainly assisted in reading, and the specific implementation manners are as follows: See Figure 3 , when not in use, the two protective cases 3 are in a closed state. The protective case 3 and the fixed case 2 form a closed space to protect the internal transparent window. The closed state can prevent impurities such as dust, soil, and dirt from entering the transparent window, keeping it clean. In rainy or humid environments, the closed state can prevent moisture or humidity from entering, protecting the transparent window from damage. When the operator needs to read the oil level gauge, the two protective cases 3 can be opened. At the same time, the driving assembly will rotate the two observation cases 4 in the direction of approaching each other. When the two observation cases 4 are closed, the reading is taken through the auxiliary assembly on the observation case 4. This not only enables the operator to read the oil level data more clearly and accurately, reducing misjudgment and errors; but also, since the observation case can be automatically driven to approach and close while opening the protective case, without multiple operation steps, the working efficiency of the operator is greatly improved when reading the oil level data. When a large number of oil level readings of the oil level gauge need to be completed, the oil level gauge reading auxiliary structure designed in this application can save a lot of time for the operator.

[0022] By setting the protective case 3 and the observation case 4, when the staff needs to take a reading, when the protective case 3 is opened, the observation case 4 is automatically closed through the driving assembly, and then the reading is taken through the auxiliary device installed on the observation case 4 to assist the operator in taking the reading. When the auxiliary device is not needed, the protective case 3 can be closed, so that the driving assembly drives the observation case 4 back into the closed cavity of the protective case 3 and the tubular oil level gauge 1, thereby protecting the auxiliary device and the transparent window and preventing the influence of external environmental factors (such as dust, rain, etc.) on the transparent window and the auxiliary device, adapting to various weather and operating environments.

[0023] Any auxiliary device that can achieve the reading function in the prior art can constitute the auxiliary device of this application. That is to say, the oil level gauge reading auxiliary structure designed in this application can adopt the known auxiliary devices that achieve the reading function in the prior art. However, when using the known auxiliary devices that achieve the reading function in the prior art, there are still obvious defects: since the operator is sometimes at a relatively far distance from the oil level gauge, there is a technical problem that the operator cannot see clearly when reading the oil level data. In the face of this technical defect, this application further designs an auxiliary assembly applied to the above-mentioned oil level gauge reading auxiliary structure, which can not only achieve the function of reading magnification, but also reduce the interference of ambient light on the magnifying glass, enable the magnifying glass to focus better, and the magnifying glass does not need to be frequently cleaned and maintained, reducing the maintenance cost and workload. The specific auxiliary assembly is as follows: Further, the auxiliary component includes an observation window 5 vertically and slidably installed on the closing connection side of one of the observation shells 4, and a magnifying glass 19 is vertically and slidably installed on the closing connection side of the other observation shell 4. When the two observation shells 4 are closed, the magnifying glass 19 and the observation window 5 are closely attached to each other front and back.

[0024] Further, the front and back attachment surfaces of the observation window 5 and the magnifying glass 19 are arc surfaces.

[0025] Refer to Figure 2 and Figure 9 As shown in the figure, on the closing connection sides of the two observation shells 4, a magnifying glass 19 and an observation window 5 are respectively installed, and they jointly form an auxiliary component. When it is necessary to read the value of the tubular oil level gauge 1, the staff opens the two protective shells 3, and then drives the two observation shells 4 to close through the driving component. At the same time, the observation window 5 and the magnifying glass 19 will overlap front and back to form a whole. Then, the staff can move the observation window 5 and the magnifying glass 19 to make them correspond to the index position, thereby magnifying the reading and enabling the staff to read more clearly. After the observation window 5 and the magnifying glass 19 overlap front and back, the observation window 5 is on the side farther from the tubular oil level gauge 1. The observation window 5 can reduce the interference of ambient light on the magnifying glass 19, enabling the magnifying glass 19 to focus better and improving the clarity of the reading. Moreover, the observation window 5 provides additional protection, and the magnifying glass 19 does not need to be frequently cleaned and maintained, reducing the maintenance cost and workload.

[0026] It should be noted that the attachment surface of the observation window 5 and the magnifying glass 19 is an arc surface, and the radian of this arc surface is adapted to the arc-shaped movement trajectory of the two observation shells 4, so that when the two observation shells 4 are closed, the front and back arc surfaces of the observation window 5 and the magnifying glass 19 are in contact. The arc surface design makes the opening and closing process of the two smoother, reduces jamming and resistance, prevents interference, and the arc surface design is more closely attached than the plane design, improving the overall sealing effect and preventing dust and impurities from entering.

[0027] In addition, it is worth mentioning that, as Figure 2 shown in Figure 9 the figure, square notches for installing the auxiliary component are respectively opened on the closing connection sides of the two observation shells 4, and the square notches of the two observation shells 4 are connected after closing.

[0028] Sliders are fixedly installed on the vertical sides of the observation window 5 and the magnifying glass 19. Sliding grooves for the sliders to slide therein are provided on the vertical side walls of the square notch of the observation shell 4. Magnets are installed in the frames of the magnifying glass 19 and the observation window 5. When they come into contact, they will be magnetically locked through the magnets. When the staff moves the observation window 5 through the baffle at the top of the observation window 5, the magnifying glass 19 can be driven to move up and down at the same time, so that the observation window 5 and the magnifying glass 19 can be moved to the index position, and then magnified and observed. The baffle at the top of the observation window 5 can also block rain and snow to a certain extent in rainy and snowy weather, preventing rain, snow and ice from adhering to the surface of the observation window 5, thus causing reading interference.

[0029] Further, the driving assembly includes an annular groove 7 opened at the inner bottom of the fixed shell 2. A rotating gear 8 is rotatably installed in the annular groove 7. A first rack 9 meshing with the rotating gear 8 is fixedly installed inside the protective shell 3. A second rack 10 meshing with the rotating gear 8 is fixedly installed on the outer wall of the observation shell 4.

[0030] See Figure 2 and Figure 5 a rotating gear 8 is rotatably installed in the annular groove 7. When the staff opens the two protective shells 3 to both sides, taking Figure 2 as an example, the first rack 9 on the inner wall of the protective shell 3 will rotate clockwise, thus driving the rotating gear 8 to rotate clockwise, and then driving the second rack 10 to rotate counterclockwise, so that the two observation shells 4 approach each other until they are closed. Similarly, when the two protective shells 3 are closed after use, the two observation shells 4 are rotated to both sides through the cooperation of the first rack 9, the rotating gear 8 and the second rack 10, so as to enter the sealed cavity formed by the protective shell 3 and the tubular oil level gauge 1 to complete the protection of the observation window 5 and the magnifying glass 19.

[0031] Further, several groups of lighting lamps 12 are installed on the inner wall of the protective shell 3. A connecting block 13 is fixedly installed on the outer wall of the protective shell 3. A first contact piece is installed on the outer wall of the connecting block 13, and each group of lighting lamps 12 is electrically connected to the first contact piece; An installation shell 18 is fixedly installed on the inner wall of the fixed shell 2. A battery is installed inside the installation shell 18. A contact port 20 for the connecting block 13 to insert is opened on the outer wall of the installation shell 18. A second contact piece is fixedly installed on the inner wall of the contact port 20, and the second contact piece is electrically connected to the battery. When the first contact piece contacts the second contact piece, the circuit is closed and powered on.

[0032] In some industrial and commercial equipment that needs to operate around the clock, it is necessary to monitor the oil level at night to ensure the normal operation of the equipment and avoid potential failures. In the night environment, due to insufficient light, staff often cannot accurately observe the readings. The existing tubular oil level gauge 1 is provided with fluorescent scales. Although the fluorescent scales will emit light in a dark environment, their brightness and clarity may not be sufficient to provide accurate readings, especially in complete darkness or insufficient light. Therefore, this embodiment is designed with a lighting function. When the two protective shells 3 are opened, the lighting function will be activated to illuminate the interior, so that not only can staff observe the readings more clearly, but also because the lighting function can be activated while opening the protective shell, without multiple operation steps, the operating efficiency is greatly improved when the operator reads the oil level data, and a large amount of time of the operator can be saved. The specific implementation method is as follows: See Figure 4 , a number of groups of lighting lamps 12 are provided on the inner wall of the protective shell 3. When the staff reads the readings at night, the two protective shells 3 are opened. When the protective shell 3 rotates to the limit state, the connecting block 13 will be inserted into the contact port 20 of the mounting shell 18, and the first contact piece on the connecting block 13 will contact the second contact piece on the contact port 20, thus completing the power-on, so that the battery inside the mounting shell 18 can supply power to the lighting lamps 12, so that the lighting lamps 12 illuminate the inside of the protective shell 3 to facilitate the staff to read the readings at night.

[0033] It is worth mentioning that each group of lighting lamps 12 corresponds to the transparent window on the outer shell of the tubular oil level gauge 1 one by one. The light irradiated through the transparent window can be evenly distributed inside the oil level gauge, avoiding local shadows and improving the visibility and accuracy of the readings.

[0034] Furthermore, a piston body 14 is fixedly installed on the inner wall of the fixed shell 2. Two piston plates 15 are slidably installed on the inner wall of the piston body 14. The outer walls of the two piston plates 15 are fixedly connected with piston rods 16. The two piston rods 16 penetrate through the outer wall of the piston body 14 and are fixedly connected with the outer wall of the corresponding protective shell 3. An air inlet groove 17 is opened on one side of the top of the piston rod 16 close to the piston plate 15; An air inlet pipe communicating with the outside is installed on the inner wall of the piston body 14. An air outlet pipe communicating with the inside of the fixed shell 2 is also installed on the inner wall of the piston body 14. Check valves are installed in both the air inlet pipe and the air outlet pipe.

[0035] In cold weather, moisture in the air may condense and adhere to the surface of the transparent window, and may further freeze. This not only increases the difficulty for staff to observe the readings, but may also cause thermal expansion and contraction of the material. When ice forms on the surface of the transparent window, the formation and melting of ice will cause severe temperature fluctuations, resulting in uneven stress on the material, which may cause cracks or breakage of the transparent window. Therefore, in this embodiment, the phenomenon of moisture condensation in the air in cold weather is mainly solved, and the specific implementation method is as follows: See Figure 6 And Figure 7 When the staff needs to observe the indication, opening the two protective shells 3 will drive the two piston rods 16 to move, thereby driving the two piston plates 15 to approach each other, and then sucking the outside air into the inside of the piston body 14 through the air intake pipe (specifically, the independent space formed between the piston plate 15 and the inner wall of the adjacent piston body 14). When the staff finishes reading and closes the two protective shells 3 at the same time, the two protective shells 3 approach each other, driving the two piston plates 15 to move away from each other through the piston rods 16, so that the pressure in the space formed between each piston plate 15 and the inner wall of its adjacent piston body 14 continuously increases. When the two protective shells 3 are completely closed and form a closed space with the tubular oil level gauge 1, the air intake groove 17 just crosses the inner wall of the piston rod 16, so that the gas inside the piston body 14 is released, so that the sealed space formed by the protective shell 3 and the tubular oil level gauge 1 is in a high-pressure state, forming a pressure difference with the outside world. In this way, the air flow direction can always be from the inside to the outside, avoiding the entry of external water vapor from the gaps between the above structures.

[0036] Among them, since both the protective shell 3 and the fixed shell 2 are arc-shaped, the piston body 14 is also set to be arc-shaped, and the curved surface of the piston body 14 is closely attached to the inner wall of the fixed shell 2.

[0037] It is worth mentioning that a filter screen and a water-absorbing material are arranged inside the air intake pipe, and dry air is used to further reduce the humidity inside the cavity and prevent the formation of condensed water.

[0038] In addition, it should be noted that the pressure of the injected air is ensured to be stable, neither too high nor too low. Excessive pressure may damage the transparent window or other components, while too low pressure may not effectively prevent condensed water.

[0039] Furthermore, folding partition cloths 6 are fixedly installed at the tops of both the observation window 5 and the magnifying glass 19. One side of the folding partition cloth 6 is fixedly connected to the square notch of the corresponding observation shell 4. The bottoms of the observation window 5 and the magnifying glass 19 are also fixedly installed with folding partition cloths 6, and one side of the folding partition cloth 6 is fixedly connected to the square notch of the corresponding observation shell 4; The folding partition cloths 6 of the observation window and the magnifying glass are in contact with each other front and back, and a magnet is installed at the contact part.

[0040] Refer to Figure 1 When a reading is needed, the reading window 5 and the magnifying glass 19 are moved to magnify the reading to be taken. During this process, the folding baffle cloth 6 on the upper and lower sides will fold or unfold, allowing light to pass only through the area corresponding to the reading window 5 and the magnifying glass 19, enhancing the light intensity and contrast, making the reading clearer and more visible, and also blocking unnecessary light, reducing glare and providing a more comfortable observation environment.

[0041] Magnets are provided at the contact of the folding baffle cloth 6. When they come into contact, they can attract each other through the magnets, preventing light from leaking through the gap between them and causing trouble to the operator.

[0042] Furthermore, handrails 11 are fixedly installed on the outer walls of both protective cases 3, and magnets are installed on the closing and connecting sides of the protective cases 3.

[0043] Refer to Figure 1 and Figure 3 A handrail 11 is installed on the outer wall of the protective case 3. The staff can more conveniently open the two protective cases 3 through the handrail 11, and magnets are provided at the joint of the protective cases 3 to prevent the two protective cases 3 from opening automatically under normal conditions and damaging the internal tubular oil level gauge 1.

[0044] Furthermore, absorbent cotton is installed at the bottom inside the fixed case 2.

[0045] Setting absorbent cotton at the bottom inside the fixed case 2 can further dry the air entering the sealed space formed by the protective case 3 and the tubular oil level gauge 1, preventing the generation of condensate water when the transformer is working.

[0046] Furthermore, reflective layers are provided on the inner walls of the protective case 3 and the fixed case 2.

[0047] The reflective layer can reflect the light emitted by the lighting lamp 12 back into the interior of the tubular oil level gauge 1, thereby increasing the internal brightness and visibility. Through multiple reflections, the light can be evenly distributed on the surface of the oil level gauge, reducing shadows and dark areas.

[0048] The standard parts used in this embodiment can be directly purchased from the market. For the non-standard structural components described in the specification and drawings, they can also be directly processed without any doubt based on existing technical knowledge. At the same time, the connection methods of each component adopt mature conventional means in the existing technology, and the machines, parts and equipment all adopt conventional models in the existing technology, so no specific description will be made here.

[0049] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary reading structure for an oil level gauge, characterized in that: include: Tube oil level gauge (1); A fixed shell (2), wherein the outer wall of the tubular oil level gauge (1) is fixedly mounted with the semi-open fixed shell (2); A protective shell (3), wherein two protective shells (3) are rotatably mounted on the inner wall of the fixed shell (2) and are capable of moving closer to or farther from each other; An observation shell (4), wherein the outer wall of the tubular oil level gauge (1) is rotatably mounted with two observation shells (4) that can move closer to or farther away from each other, and the observation shells (4) are located inside the protective shell (3); When the two protective shells (3) are in a closed state, the two observation shells (4) are retracted into a closed space formed by the protective shells (3) and the tubular oil level gauge (1); When the two observation shells (4) are in a closed state, the two protection shells (3) are retracted between the fixed shell (2) and the tubular oil level gauge (1); An auxiliary component installed on the closed and connected side of the two observation shells (4), when the two observation shells (4) are closed, the auxiliary component can read the oil level gauge reading; A driving assembly capable of causing the protective shell (3) and the observation shell (4) to move in opposite directions.

2. The oil level gauge indication auxiliary reading structure according to claim 1, characterized in that: The auxiliary component comprises an observation window (5) vertically slidably mounted on the closed connecting side of one of the observation shells (4), and a magnifying glass (19) vertically slidably mounted on the closed connecting side of the other observation shell (4); when the two observation shells (4) are closed, the magnifying glass (19) and the observation window (5) are tightly fitted front to back.

3. The oil level gauge indication auxiliary reading structure according to claim 1, characterized in that: The driving assembly comprises an annular groove (7) formed in the bottom of the fixed shell (2), a rotating gear (8) being rotatably mounted in the annular groove (7), a first rack (9) meshing with the rotating gear (8) being fixedly mounted inside the protective shell (3), and a second rack (10) meshing with the rotating gear (8) being fixedly mounted on the outer wall of the observation shell (4).

4. The oil level gauge indication auxiliary reading structure according to claim 1, characterized in that: A piston body (14) is fixedly mounted on the inner wall of the fixed shell (2), two piston plates (15) are slidably mounted on the inner wall of the piston body (14), piston rods (16) are fixedly connected to the outer walls of the two piston plates (15), the two piston rods (16) penetrate the outer wall of the piston body (14) and are fixedly connected to the outer wall of the corresponding protective shell (3), and an air inlet groove (17) is provided on the top of the piston rod (16) and close to the piston plate (15); An air inlet pipe communicating with the outside is installed on the inner wall of the piston body (14), and an air outlet pipe communicating with the inside of the fixed shell (2) is also installed on the inner wall of the piston body (14), and both the air inlet pipe and the air outlet pipe are installed with a one-way valve.

5. The oil level gauge indication auxiliary reading structure according to claim 2, characterized in that: The tops of the observation window (5) and the magnifying glass (19) are both fixedly mounted with a folding grid cloth (6), one side of which is fixedly connected to the corresponding observation shell (4); the bottoms of the observation window (5) and the magnifying glass (19) are also fixedly mounted with a folding grid cloth (6), and one side of which is fixedly connected to the corresponding observation shell (4); The folded grid cloth (6) of the observation window (5) and the magnifying glass (19) are in front-to-back contact and a magnet is installed at the contact point.

6. The oil level gauge indication auxiliary reading structure according to claim 1, characterized in that: The outer walls of the two protective shells (3) are both fixedly mounted with handrails (11), and the closed and connected side portions of the protective shells (3) are both mounted with magnets.

7. The oil level gauge indication auxiliary reading structure according to claim 2, characterized in that: The front and rear fitting surfaces of the observation window (5) and the magnifying glass (19) are arc surfaces.

8. The oil level gauge indication auxiliary reading structure according to any one of claims 1 to 7, characterized in that: Water-absorbing cotton is installed at the bottom of the fixed shell (2).

9. The oil level gauge indication auxiliary reading structure according to any one of claims 1 to 7, characterized in that: The inner walls of the protective shell (3) and the fixed shell (2) are provided with a reflective layer.

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